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*UNITED STATES PATENT A. Q. ALLIS, OF DAYTON, OHIO.

IMPROVE MENT IN TREADLES FOR SEWING-MACI-Ifhd.

Specification forming part of Letters Patent No. 79,296, dated June 30,i888.

To all whom it may concern Be it known that I, A. 0. ALLIS, of Dayton,in the county of Montgomery and State of Ohio, have invented a new anduseful Ixuprovement in Sewing-Machines; and I do hereby declare that thefollowing is a full, clear, and exact description thereof', which willenable those skilled in the art to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification, in which Figure lis a sido View of a sewing-machine withmy improved spring attachment. Fig. 2 is a vertical cross-section takenin the line m Fig. 1.

Similar letters of reference indicate corresponding parts.

The nature of this invention consists in an arrangement of a coil springor springs as the moving power of sewing-machine for ordinary domesticuse, in order to dispense with the treadle for operating the machinewith the foot, as usual, together with a device for regulating themotion, as hereinafter described.

A represents the bed of an ordinary sewingmachine operated by adriving-shaft, B, hung in the end framing C O, provided With afly-wheel, D, and a pulley, E, for running the machine.

Under the bed A is fixed alight rectangular frame, a, a, in one side ot'which is placed a powerful flat coi1spriug, F, similar in constructionto the ordinary clock-spring on the axis b b, which has ou it aratchet-wheel, c, held by the pawl d. when the spring expands to turnthe spur-wheel e on the shaft b b to give the required motion to themachine. The spur-Wheel e engages a pinion, g, on a countershaft, bl,that carries another spnrwheel, el, which engages a pinion, gl, onanother coun ter-shaft, b2, also carrying another spur-wheel, e2, thatengages a pinion, g3, on ilu-l, drivingshaft B.

By this arrangement of powerful coil spring or sprin gs connected withthe driving- Shaft of a sewing-machine, it will be seen that the lightpower required i'or running it with ordinary Work is applied veryconveniently instead of using the feet on a treadle to work the machine,as usual, which many ladies Iiind laborious and objectionable.

In order to regulate the motion of the ma chine, I provide a rubber orbrake, h, that bears upon a friction-rolle1',h, ou the main shaft B,which rubber h is ope-wiwi on by a rod, 7c, on the lower end of' wm l isa spiral spring, on., the tension of which i nf'erned by a foot-lever,n, the outer end of u hich is set to catch in one of a series ot' teeth'in a rack, p, on the frame C, to contract or expand the spring, toexert more or less pressure of the rubber h on the roller IL', asrequired to adjust the motion ofthe machine to the work.

Having thus described my invention, what l claim as new, and desire tosecu re by Letters Patent, is-

The arrangement upon the frame A of the spring F on shaft b, theratclmtwheel c, pawl d, and gear-Wheels, g, e f/, l, y?, drivingshaft B,pulley E, flywheel D., irielion pulley h', brake h, rod 7c, spring m,treade or., and rack p, as herein described, for the purpose specilied.

DENIS REGAN.

